Long range tank - breather line versus fill line

[BigRAWesty]

If I had time, I would've moved the "fast fill line" bit further away from the fill line(same level of course).
It's a pretty bad design to make it that close to the fill line, I think, 'cos there's no obvious reason for it to be that close
to the fill line, even though being at the same level as fill line makes sense.

That fast fill only returns to the top of the filler neck, just past the flow of the nozel. .
So air can quickly get past the flow of the fuel..
Once the hole is covered then the fuel comes back up the line and clicks off the pump.

The slow breather I'm pretty sure is vented to atmosphere threw a tiny filter which is tucked up on top of the fillers..